| 摘要 |
PURPOSE:To improve spatial positional accuracy of a coil by restricting the coil with a housing path which is provided at a mold and by forming a coil parts. CONSTITUTION:A lower mold 6 is an arc-shaped mold whose thickness is uniform and groove 6a as a housing path being based on a specific wiring pattern is formed with improved accuracy at an outer surface 6a by NC machining. An upper mold 7 is in arc shape whose thickness is uniform and an inner surface 7a of this upper mold 7 has nearly the same curvature as the outer surface 6b of the lower mold 6. A protruding part 7c is allowed to protrude at a position corresponding to the groove 6a of the above lower mold 6 on the inner surface 7a of this upper mold 7. With the upper mold 7, by pressing a coil 13 until the upper mold 7 comes into contact with the upper surface 6b of the lower mold 6, the coil 13 can be held so that it does not wave. Then, an epoxy resin 9 is impregnated in vacuum state into a space 8 between the outer surface 6c between the grooves 6a of the lower mold 6 and the inner surface 7b of the upper mold 7 and the resin 9 is cured to enable a molded parts to be formed. |
